This paper reports on the challenge to extend an existing distributed camera surveillance security application with Bluetooth driven wireless communication using handheld PC?s. The main focus is on the engineering aspect of the development of BlueGuard. The paper gives an in-depth assessment of the chosen open software used and the choices made, on how Bluetooth support was designed in the BlueGuard application, and on how was coped with the technical dif.culties encountered while implementing spontaneous ad hoc connections between handheld and PC by wireless PANs. Several new software components of BlueGuard are designed in such a way that they can be re-used in other applications for setting up ad hoc connections over IP.

The distributed camera surveillance security application was built using the SEESCOA (Software Engineering for Embedded Systems using a Component Oriented Approach) component-oriented methodology and is an example of re-use and modularity.